Feeding bottle



J. H. S. HOGG FEEDING BOTTLE Dec. 1, 1942.

Filed Nov. 16, 1939 r9 7ORNEX Patented Dec. 1, 1942 UNiTED snares haremtime FEEDING BOTTLE John Herbert Scott Hogg, Settlement of Empire,Ontario, Canada Application November 16, 1939, Serial No. 304,810

7 Claims.

My invention relates to a feeding bottle.

The usual or standard feeding bottle has a number of disadvantages. Forinstance, it has to be tilted from time to time to the proper feedingposition so that milk, rather than air, will feed to the infants mouth;if the bottle is not suitably tilted, air, and not milk, or air andmilk, will be sucked and swallowed, instead of milk only, which, as iswell known, is a frequent cause of baby discomfort, the infant sufferingfrom stomach pains.

The object of the invention is to provide a feeding bottle which IWllleliminate the disadvantages of the usual or standard bottle, asaforesaid.

More specifically, an object of the invention is to so design a feedingbottle that no air, or substantially no air, will accumulate in theportion of the bottle next to the nipple as the milk is being consumed.

Another specific object of the invention is to provide in a feedingbottle a piston forming the effective bottom of the bottle, which pistongradually slides in the bottle as the milk is being consumed.

Another object of the invention is to so design the feeding bottle thatthe piston will have little tendency to jam or freeze in the bottle.

Another object of the invention is to so design the bottle that thepiston will be moved upwardly as the milk is being consumed, simply bythe action of the infant as it sucks, and will not recede when suctionis removed.

In the drawing there is shown a feeding bottle made in accordance withmy invention, the bottle being shown partly in section and partly inelevation, and partly broken away.

Referring now by numerals to the drawing, II] is the body portion of thebottle, having a neck portion II suitably formed to removably receive anipple I2. The body portion I is open at the bottom, and the side orvertical wall formed with a spiral recess or groove as at I3. I4 is thepiston, which is formed or sized to slide vertically on the inside faceor surface of the wall of the body portion, the wall and piston beingsufficiently smooth or finished to provide a sliding fit between walland piston, in the manner that a piston slides in a cylinder. The upperface of the piston is formed to correspond as closely as possible withthe upper part of the body portion, so that very little milk or feedingmixture will be left within the bottle, and very little will be wasted,when the piston has reached its uppermost position.

i6 is the bottom of the bottle, being provided with a spiral thread Iladapted to engage and thread in the spiral groove I3 of the bodyportion, tothe end that the bottom I6 may be applied to, and removedfrom, the body portion. That the piston I4 may better slide and beguided through the body portion without tendency to bind or freeze, andbe easily removed from the bottle when the bottom I6 has been removed,it is preferably provided with a depending plunger or rod I5, which ismade to slide in a tubular sleeve or extension I8, depending from thebottom I6. This sleeve will also prevent the accidental displacement ofthe piston, if made long enough to cover or shield the piston at alltimes. The sleeve is preferably closed at the bottom except for an airvent I9 which enables the piston rod to move easily and freely withinthe sleeve I8.

That the piston I4 may rise in the body portion as when the infant issucking, but not lower in the body portion when suction is removed,there is provided a one-way valve means indicated at'20, and which, asshown, is located within or forms an integral part of the bottom I6. Inthe form shown, there is provided a chamber 2! havingoppositely-disposed reduced inlet and outlet passages or ports 22 and22A, respectively, extending through the opposite parallel faces of thebottom. From a point preferably mid-length of the chamber II is aby-pass 23 leading to and through the upper face of the bottom. Withinthe chamber 2| is a valve in the form of a ball 24. As will be obvious,the ball operates to either open or close the inlet, according as towhether the infant is or is not sucking, and in the latter case,according to the position or tilt of the bottle.

When in the position shown, the ball will prevent any air lodged in thebottle between the bottom I6 and the piston I4 from escaping. When theball is in a position next to the outlet 22A, air will be admitted intothe inlet 22, the chamber ZI and by-pass 23, thus enabling the piston torise in the body portion. It is proposed to make the component parts ofthe bottle, other than the nipple, of glass, although, conceivably, itmight be possible to use other materials from which to make thesecomponent parts.

The operation of the bottle will be easily understood. When it isdesired to refill the bottle, the bottom It is removed by unscrewing thesame from the body portion, and the piston I4, now free to slide out ofthe body portion, is also removed. The nipple I2 is also removed fromthe neck II. As the thread I1 is formed exteriorly of the edge of thebottom, and the groove I3 is formed inwardly in the wall of the bottleto accommodate the thread, the piston can be easily removed. Thesecomponent parts of the bottle may now be washed and sterilized. Whenassembling the parts together, the piston is applied in position on thebottom l6, and the bottom, with piston I 4, applied to the body portionby screwing or threading the bottom to the body portion. The piston nowrests upon or engagesthe upper face of the bottom, as shown.

The feeding mixture or milk is next poured into the body portion throughthe neck II, and the nipple applied in position. The bottle is now readyto be used. As the infant sucks and consumes the milk or mixture, thepiston l4 rises in the body portion l0 until it engages the upper partof the body portion, when the milk will have been substantially allconsumed.

I claim:

1. A feeding bottle having a neck portion at the upper end to receivethe nipple and open at the lower end, a removable member closing thelower end of said bottle, a piston slidable in said bottle and lyingbetween said neck portion and said member, and valve means associatedwith said member permitting of said piston to rise toward said neckportion by suction applied to the nipple but not to lower when suctionis removed.

2. A feeding bottle having a. neck portion at the upper end to receivethe nipple and open at the lower end, a removable member closing thelower end of said bottle, a piston slidable in said bottle and lyingbetween said neck portion and said member, and valve means associatedwith said member permitting of said piston to rise toward said neckportion by suction applied to the nipple but not to lower when suctionis removed, unless said member is in process of being removed from saidbottle.

3. A feeding bottle having a neck portion at the upper end to receivethe nipple and open at the lower end, a removable member closing thelower end of said bottle, a piston slidable in said bottle between saidmember and said neck portion, and valve means associated with saidmember permitting of said piston to rise toward said neck portion bysuction applied to the nipple but not to lower when suction is removed.

4. A feeding bottle having a neck. portion at the upper end to receivethe nipple and open at the lower end, a removable member closing thelower end of said bottle, a piston slidable in said bottle between saidmember and said neck portion, and valve means associated with saidmember permitting of said piston to rise toward said neck portion bysuction applied to the nipple but not to lower when suction is removedunless said member is in process of being removed from said bottle.

5. In a feeding bottle as set forth in claim 1, said piston having adepending plunger co-operating with said member to guide said piston inits sliding movement within said bottle.

6'. In a feeding bottle as set forth. in claim 1, said piston having adepending plunger co-operating with said member to guide said piston inits sliding movement within said bottle and said member having adepending sleeve within which said plunger is slidably guided.

7. In a feeding bottle as set forth in claim 1, said piston having adepending plunger co-operating with said member to guide said piston inits sliding movement within said bottle and said member havinga'depending sleeve within which said plunger is slidably guided, saidsleeve being of a length to substantially encompass said plungerirrespective of the position of said piston.

JOHN HERBERT SCOTT HOGG.

